CN204175686U - A kind of bender hydraulic system - Google Patents
A kind of bender hydraulic system Download PDFInfo
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- CN204175686U CN204175686U CN201420644782.8U CN201420644782U CN204175686U CN 204175686 U CN204175686 U CN 204175686U CN 201420644782 U CN201420644782 U CN 201420644782U CN 204175686 U CN204175686 U CN 204175686U
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Abstract
The utility model discloses a kind of bender hydraulic system, belong to hydraulic system field.It comprises pumping plant, selector valve, oil hydraulic cylinder and liquid-filling valve, oil hydraulic cylinder has two, oil hydraulic cylinder comprises epicoele and cavity of resorption, pumping plant comprises volume adjustable hydraulic pump and fuel tank, selector valve comprises P mouth, A mouth, B mouth and T mouth, volume adjustable hydraulic pump oil outlet is connected with selector valve P mouth, selector valve A mouth is connected with two oil hydraulic cylinder epicoele first filler openings respectively by pipeline, on the pipeline of liquid-filling valve between the second filler opening and fuel tank, pipeline between liquid-filling valve and two the second filler openings is respectively provided with a flowmeter, first oil outlet is connected with B mouth by pipeline, the pipeline at each first oil outlet place is provided with a flowmeter, pipeline between first oil outlet and B mouth is provided with fuel-displaced control gear.The utility model adopts volume adjustable hydraulic pump, effectively can regulate pump station pressure as required, rationally arrange safety valve position, set up flow detection parts, make hydraulic system more simple and practical, and Safety performance improves.
Description
Technical field
The utility model belongs to hydraulic system field, specifically, relates to a kind of bender hydraulic system.
Background technique
Hydraulic bending press employing HYDRAULIC CONTROL SYSTEM oil cylinder has stretched the bending work to workpiece.Bender hydraulic system is generally by quantitative hydraulic pump, and conversion valve block, oil cylinder oil inlet oil circuit, oil cylinder oil return circuit and the parts such as safety valve, one-way valve form.Wherein quantitative hydraulic pump provides oil liquid pressure (pressure can not regulate), and stretching out through conversion valve block to oil cylinder or shrink provides power; When oil cylinder work is entered, fluid flows back to fuel tank through oil return circuit, if now oil return circuit is abnormal, oil cylinder working-pressure is increased, pipeline even oil cylinder will be damaged, prior art is generally provided with safety valve with head it off at oil return circuit, but safety valve setting position is unreasonable, make complex structure, add pipeline; In prior art, bender hydraulic system work is full closeding state, and whether those skilled in the art cannot normal from external observation to hydraulic system.
China Patent No.: 200520070940.4, publication date on November 22nd, 2006, disclose a kind of bender hydraulic system, comprise oil pump, fuel tank, three position four-way directional control valve, liquid-filling valve is connected between fuel tank and cylinder upper cavity oil; The oil outlet of oil pump is through two-way plug-in valve connected tank; The P mouth of three position four-way directional control valve connects the oil outlet of oil pump, and B mouth connects oil cylinder cavity of resorption through poppet valve, one-way throttle valve; B mouth also connects oil cylinder cavity of resorption through a back pressure valve, throttle valve; B mouth also connects the control mouth of liquid-filling valve; The A mouth of three position four-way directional control valve connects cylinder upper cavity oil through throttle valve; One-way valve is parallel with at the two ends of throttle valve.This model utility utilizes one-way valve and the damping of selector valve Median Function and epicoele hydraulic fluid port, forms relief circuit, not only simple but also reliable; Back pressure controls to adopt pressure valve easily to regulate.This model utility solves the unreliable and back pressure of hydraulic control system of bender off-load and adjusts loaded down with trivial details problem, but this model utility adopts quantitative hydraulic pump, pump station pressure can not regulate, oil cylinder cavity of resorption oil return circuit is complicated, safety valve setting position is unreasonable, add pipeline, and hydraulic work system situation can not be observed from device external.
China Patent No.: 201120495897.1, publication date on August 1st, 2012, disclose a kind of bender hydraulic system, this bender hydraulic system comprises oil pump, fuel tank, three position four-way directional control valve, and liquid-filling valve is connected between fuel tank and cylinder upper cavity oil; The oil outlet of oil pump is through two-way plug-in valve connected tank; The P mouth of three position four-way directional control valve connects the oil outlet of oil pump, and B mouth connects oil cylinder cavity of resorption through the first solenoid directional control valve; B mouth also connects the control mouth of liquid-filling valve; The A mouth of three position four-way directional control valve connects cylinder upper cavity oil through throttling one-way valve; B mouth also connects oil cylinder cavity of resorption through the second solenoid directional control valve, throttle valve.This model utility solves that the not high and valve group of hydraulic control system of bender back pressure control stability installs trouble and the problem such as product is heavy, power density ratio is low, but this model utility adopts quantitative hydraulic pump, pump station pressure can not regulate, whole hydraulic system does not have detection device, and technician can not be made to observe hydraulic work system situation from device external.
Summary of the invention
The problem that 1, will solve
Quantitative hydraulic pump is adopted for existing bender hydraulic system, pump station pressure can not be regulated, oil cylinder cavity of resorption oil return circuit is complicated, safety valve position arranges and unreasonablely pipeline is increased and the problem of hydraulic work system situation can not be detected from its exterior, the utility model provides a kind of bender hydraulic system, adopt volume adjustable hydraulic pump, effectively can regulate pump station pressure as required, simplify oil circuit, safety valve position is rationally set, set up flow detection parts, make hydraulic system more simple and practical, Safety performance improves.
2, technological scheme
For solving the problem, the utility model adopts following technological scheme.
A kind of bender hydraulic system, comprise pumping plant, selector valve, oil hydraulic cylinder and liquid-filling valve, described oil hydraulic cylinder has two, and oil hydraulic cylinder comprises epicoele and cavity of resorption, and oil hydraulic cylinder epicoele is provided with the first filler opening and the second filler opening, and cavity of resorption is provided with the first oil outlet; Described pumping plant comprises volume adjustable hydraulic pump and fuel tank, and volume adjustable hydraulic pump is provided with filler opening and oil outlet; The filler opening of described volume adjustable hydraulic pump is connected with fuel tank; The oil outlet of described volume adjustable hydraulic pump is also connected with fuel tank, and is provided with relief valve between oil outlet and fuel tank; Described selector valve adopts three-position four-way electromagnetic directional valve, comprises P mouth, A mouth, B mouth and T mouth; Described volume adjustable hydraulic pump oil outlet is connected with selector valve P mouth; Described selector valve A mouth is connected with two oil hydraulic cylinder epicoele first filler openings respectively by pipeline, and the pipeline between selector valve A mouth and the first filler opening is provided with one-way valve; Described oil hydraulic cylinder epicoele second filler opening is also connected by pipeline with fuel tank; On the pipeline of described liquid-filling valve between the second filler opening and fuel tank, the pipeline between liquid-filling valve and two the second filler openings is respectively provided with a flowmeter; The first described oil outlet is connected with B mouth by pipeline, and the pipeline at each first oil outlet place is provided with a flowmeter; Pipeline between the first described oil outlet and B mouth is provided with fuel-displaced control gear.
Preferably, described fuel-displaced control gear comprises first control device and second control device, and described first control device and second control device are connected on the pipeline between the first oil outlet and B mouth; First control device comprises one-way valve in parallel, throttle valve and safety valve, and second control device comprises back pressure valve in parallel and solenoid valve.
Preferably, described safety valve is reduction valve.
Preferably, described back pressure valve is relief valve.
Preferably, one-way valve is provided with between described pumping plant oil outlet and selector valve P mouth.
Preferably, the T mouth of described selector valve directly connects fuel tank through filter.
Preferably, described throttle valve is adjustable restrictive valve.
Preferably, described liquid-filling valve is pilot operated directional control valve, and is connected with the B mouth of selector valve.
3, beneficial effect
Compared to prior art, the beneficial effects of the utility model are:
(1) the utility model comprises pumping plant, selector valve, oil hydraulic cylinder and liquid-filling valve, and oil hydraulic cylinder has two, and oil hydraulic cylinder comprises epicoele and cavity of resorption, and oil hydraulic cylinder epicoele is provided with the first filler opening and the second filler opening, and cavity of resorption is provided with the first oil outlet; Pumping plant comprises volume adjustable hydraulic pump and fuel tank, and volume adjustable hydraulic pump is provided with filler opening and oil outlet, and volume adjustable hydraulic pump is convenient regulates pumping plant delivery pressure; The filler opening of volume adjustable hydraulic pump is connected with fuel tank; The oil outlet of volume adjustable hydraulic pump is also connected with fuel tank, and is provided with relief valve between oil outlet and fuel tank, and relief valve plays safety valve effect, can effectively pumping plant overbottom pressure be unloaded; Selector valve adopts three-position four-way electromagnetic directional valve, comprises P mouth, A mouth, B mouth and T mouth; Volume adjustable hydraulic pump oil outlet is connected with selector valve P mouth; Selector valve A mouth is connected with two oil hydraulic cylinder epicoele first filler openings respectively by pipeline, is provided with one-way valve between selector valve A mouth and the first filler opening, can effectively prevent cavity pressure fluid adverse current on oil hydraulic cylinder from damaging selector valve to selector valve; Oil hydraulic cylinder epicoele second filler opening is also connected by pipeline with fuel tank; On the pipeline of liquid-filling valve between the second filler opening and fuel tank, the pipeline between liquid-filling valve and two the second filler openings is respectively provided with a flowmeter; First oil outlet is connected with B mouth by pipeline, the pipeline at each first oil outlet place is provided with a flowmeter, each oil hydraulic cylinder oil-feed of flowmeter energy accurate recording and fuel-displaced flow, forms correlation data, timely reflection hydraulic work system situation, facilitates technician's detection management hydraulic system; Pipeline between first oil outlet and B mouth is provided with fuel-displaced control gear;
(2) the fuel-displaced control gear of the utility model comprises first control device and second control device, and first control device and second control device are connected on the pipeline between the first oil outlet and B mouth; First control device comprises one-way valve in parallel, throttle valve and safety valve, second control device comprises back pressure valve in parallel and solenoid valve, throttle valve effectively can control Extraction rate, safety valve can fuel-displaced abnormal time timely pressure release, one-way valve plays non-return effect when the oil-feed of oil hydraulic cylinder cavity of resorption, the fuel-displaced oil circuit break-make of electromagnetic valve, back pressure valve can effective stabilizing solution cylinder pressure cavity of resorption pressure, makes this model utility more reliable and more stable;
(3) the utility model safety valve is reduction valve, in parallelly with throttle valve uses, and reduces pipeline;
(4) the utility model back pressure valve is relief valve, makes hydraulic system more reliable and more stable;
(5) be provided with one-way valve between the utility model pumping plant oil outlet and selector valve P mouth, effectively prevent pressure oil liquid adverse current from damaging pumping plant;
(6) the T mouth of the utility model selector valve directly connects fuel tank through filter, filters fluid, and protection hydraulic system, increases the service life;
(7) the utility model throttle valve is adjustable restrictive valve, can regulate fluid flowing velocity according to traffic requirement;
(8) the utility model liquid-filling valve is pilot operated directional control valve, and is connected with the B mouth of selector valve, simplifies pilot operated directional control valve hydraulic control unit, directly utilizes the Stress control that pumping plant exports.
Accompanying drawing explanation
Fig. 1 is hydraulic work system schematic diagram.
In figure: 1, pumping plant; 2, selector valve; 3, solenoid valve; 4, safety valve; 5, oil hydraulic cylinder; 6, flowmeter; 7, liquid-filling valve; 8, back pressure valve.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in detail.
Embodiment 1
As shown in Figure 1, a kind of bender hydraulic system, comprises pumping plant 1, selector valve 2, oil hydraulic cylinder 5 and liquid-filling valve 7, oil hydraulic cylinder 5 has two, oil hydraulic cylinder 5 comprises epicoele and cavity of resorption, and oil hydraulic cylinder 5 epicoele is provided with the first filler opening and the second filler opening, and cavity of resorption is provided with the first oil outlet; Pumping plant 1 comprises volume adjustable hydraulic pump and fuel tank, and volume adjustable hydraulic pump is provided with filler opening and oil outlet; The filler opening of volume adjustable hydraulic pump is connected with fuel tank; The oil outlet of volume adjustable hydraulic pump is also connected with fuel tank, and is provided with relief valve between oil outlet and fuel tank; Selector valve 2 adopts three-position four-way electromagnetic directional valve, comprises P mouth, A mouth, B mouth and T mouth; Volume adjustable hydraulic pump oil outlet is connected with the P mouth of selector valve 2; The A mouth of selector valve 2 is connected with two oil hydraulic cylinder 5 epicoele first filler openings respectively by pipeline, and the pipeline between the A mouth of selector valve 2 and the first filler opening is provided with one-way valve; Oil hydraulic cylinder 5 epicoele second filler opening is also connected by pipeline with fuel tank; On the pipeline of liquid-filling valve 7 between the second filler opening and fuel tank, the pipeline between liquid-filling valve 7 and two the second filler openings is respectively provided with a flowmeter 6; First oil outlet is connected with B mouth by pipeline, and the pipeline at each first oil outlet place is provided with a flowmeter 6; Pipeline between first oil outlet and B mouth is provided with fuel-displaced control gear; Fuel-displaced control gear comprises first control device and second control device, and first control device and second control device are connected on the pipeline between the first oil outlet and B mouth; First control device comprises one-way valve in parallel, throttle valve and safety valve 4, and second control device comprises back pressure valve 8 in parallel and solenoid valve 3; Wherein safety valve 4 is reduction valve, and back pressure valve 8 is relief valve; One-way valve is provided with between pumping plant 1 oil outlet and selector valve 2P mouth; The T mouth of selector valve 2 directly connects fuel tank through filter; Each throttle valve is adjustable restrictive valve; Liquid-filling valve 7 is pilot operated directional control valve, and is connected with the B mouth of selector valve 2.
Specific works principle, as shown in Figure 1.
Start: pumping plant 1 No Load Start, the pressure oil liquid of output enters the P mouth of selector valve 2 through one-way valve, now the P mouth of selector valve 2 is connected with T mouth, and pressure oil liquid directly flows back to fuel tank through T mouth and filter;
Under fast: open electrically switchable grating, the P mouth of selector valve 2 connects A mouth, T mouth connects B mouth, solenoid valve 3 is in channel status, pressure oil liquid flows out through A mouth, oil hydraulic cylinder 5 epicoele is flowed into from oil hydraulic cylinder 5 first filler opening by one-way valve, simultaneously, oil hydraulic cylinder 5 cavity of resorption inner fluid flows out through oil hydraulic cylinder 5 cavity of resorption first oil outlet, flow through flowmeter 6, whether the flow that flowmeter 6 starts to detect two oil hydraulic cylinder 5 cavity of resorptions outflow fluid is consistent, the fluid throttle valve and the safety valve 4 in first control device that flow out, in second control device, solenoid valve 3 flows into the B mouth of selector valve 2, fuel tank is flowed back to again through T mouth, in this process, because oil hydraulic cylinder 5 inner piston rod Action of Gravity Field rate of descent is fast, oil hydraulic cylinder 5 epicoele forms negative pressure, the liquid-filling valve 7 be connected with oil hydraulic cylinder 5 second filler opening is opened, oil-filled fast to oil hydraulic cylinder 5 epicoele, whether the fluid flow that the flowmeter 6 now between liquid-filling valve 7 with oil hydraulic cylinder 5 second filler opening starts to detect respectively inflow two oil hydraulic cylinder 5 epicoeles is consistent,
Work is entered: solenoid valve 3 channel status is closed, and oil hydraulic cylinder 5 times cavity pressures start to increase, until open back pressure valve 8, oil hydraulic cylinder 5 upper cavity pressure also starts to increase, liquid-filling valve 7 fuel cut-off, and pumping plant 1 continues to provide pressure until workpiece completes bending and molding;
Return: P mouth and the B mouth of selector valve 2 are connected, pumping plant 1 pressure oil liquid flows into oil hydraulic cylinder 5 cavity of resorption through selector valve 2, solenoid valve 3 and one-way valve, and meanwhile, the pressure oil liquid that B mouth flows out opens liquid-filling valve 7, and oil hydraulic cylinder 5 epicoele inner fluid flows back to fuel tank through liquid-filling valve 7.
This model utility is reasonable in design, and structure is simple, work safety, stable, the pipeline wherein between liquid-filling valve 7 and two the second filler openings is respectively provided with a flowmeter 6; The pipeline at each first oil outlet place is provided with a flowmeter 6, flowmeter 6 energy accurate recording each oil hydraulic cylinder 5 oil-feed and fuel-displaced flow, form correlation data, reflection hydraulic work system situation, facilitates technician to detect, administers and maintains hydraulic system in time.
Claims (8)
1. a bender hydraulic system, comprise pumping plant (1), selector valve (2), oil hydraulic cylinder (5) and liquid-filling valve (7), it is characterized in that: described oil hydraulic cylinder (5) has two, oil hydraulic cylinder (5) comprises epicoele and cavity of resorption, oil hydraulic cylinder (5) epicoele is provided with the first filler opening and the second filler opening, and cavity of resorption is provided with the first oil outlet; Described pumping plant (1) comprises volume adjustable hydraulic pump and fuel tank, and volume adjustable hydraulic pump is provided with filler opening and oil outlet; The filler opening of described volume adjustable hydraulic pump is connected with fuel tank; The oil outlet of described volume adjustable hydraulic pump is also connected with fuel tank, and is provided with relief valve between oil outlet and fuel tank; Described selector valve (2) adopts three-position four-way electromagnetic directional valve, comprises P mouth, A mouth, B mouth and T mouth; Described volume adjustable hydraulic pump oil outlet is connected with selector valve (2) P mouth; Described selector valve (2) A mouth is connected with two oil hydraulic cylinder (5) epicoele first filler openings respectively by pipeline, and the pipeline between selector valve (2) A mouth and the first filler opening is provided with one-way valve; Described oil hydraulic cylinder (5) epicoele second filler opening is also connected by pipeline with fuel tank; On the pipeline of described liquid-filling valve (7) between the second filler opening and fuel tank, the pipeline between liquid-filling valve (7) and two the second filler openings is respectively provided with a flowmeter (6); The first described oil outlet is connected with B mouth by pipeline, and the pipeline at each first oil outlet place is provided with a flowmeter (6); Pipeline between the first described oil outlet and B mouth is provided with fuel-displaced control gear.
2. a kind of bender hydraulic system according to claim 1, it is characterized in that: described fuel-displaced control gear comprises first control device and second control device, described first control device and second control device are connected on the pipeline between the first oil outlet and B mouth; First control device comprises one-way valve in parallel, throttle valve and safety valve (4), and second control device comprises back pressure valve (8) in parallel and solenoid valve (3).
3. a kind of bender hydraulic system according to claim 2, is characterized in that: described safety valve (4) is reduction valve.
4. a kind of bender hydraulic system according to claim 2, is characterized in that: described back pressure valve (8) is relief valve.
5. a kind of bender hydraulic system according to claim 1, is characterized in that: be provided with one-way valve between described pumping plant (1) oil outlet and selector valve (2) P mouth.
6. a kind of bender hydraulic system according to claim 1, is characterized in that: the T mouth of described selector valve (2) directly connects fuel tank through filter.
7. according to a kind of bender hydraulic system in claim 2-4 described in any one, it is characterized in that: described throttle valve is adjustable restrictive valve.
8. a kind of bender hydraulic system according to claim 1, is characterized in that: described liquid-filling valve (7) is pilot operated directional control valve, and is connected with the B mouth of selector valve (2).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420644782.8U CN204175686U (en) | 2014-10-30 | 2014-10-30 | A kind of bender hydraulic system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420644782.8U CN204175686U (en) | 2014-10-30 | 2014-10-30 | A kind of bender hydraulic system |
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| CN204175686U true CN204175686U (en) | 2015-02-25 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104989691A (en) * | 2015-07-10 | 2015-10-21 | 重庆市博平液压机械有限公司 | Centralized pressure supplying method of hydraulic stations |
| WO2018001388A1 (en) * | 2016-06-28 | 2018-01-04 | 安徽东海机床制造有限公司 | High-efficiency bending machine bending method |
| CN115195024A (en) * | 2022-08-09 | 2022-10-18 | 克劳斯玛菲机械(中国)有限公司 | Sheet fixing mechanism located outside product forming area of die parting surface |
-
2014
- 2014-10-30 CN CN201420644782.8U patent/CN204175686U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104989691A (en) * | 2015-07-10 | 2015-10-21 | 重庆市博平液压机械有限公司 | Centralized pressure supplying method of hydraulic stations |
| WO2018001388A1 (en) * | 2016-06-28 | 2018-01-04 | 安徽东海机床制造有限公司 | High-efficiency bending machine bending method |
| CN115195024A (en) * | 2022-08-09 | 2022-10-18 | 克劳斯玛菲机械(中国)有限公司 | Sheet fixing mechanism located outside product forming area of die parting surface |
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